PBX with internal dialling - allows simple re-routing of calls between and within two subscriber networks

摘要

When a subscriber in a second network is selected by another subscriber in the second network, an engaged signal is sent by the second network to the first network after call rerouting has been recognised. The engaged signal triggers the sending of the selection call signal from the first network and therefore the sending of the identification and the selection signal needed for call rerouting by the second network. The telephone system allows a call to be rerouted in a simple manner to a subscriber.